google-maps - 如何使用flutter_google_places_autocomplete.dart解决错误？

Question

我使用Google map 制作了一个应用程序，您可以在其中找到一个地点并在 map 上建立通往该地点的路径。我想根据用户输入的内容在其下方显示地点和地址。显示结果后，我需要获取其经度和纬度以在 map 上进行标记。

我尝试使用flutter_google_places: 0.2.3，但未定义函数(GoogleMapsPlaces，Prediction)。接下来，我使用flutter_google_places_autocomplete: 0.1.3，一切都很好。不幸的是，当我尝试运行该项目时，出现错误:

Compiler message: file:///C:/Users/admin/AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/flutter_google_places_autocomplete-0.1.3/lib/src/flutter_google_places_autocomplete.dart:337:35: Error: Too many positional arguments: 0 allowed, but 1 found. Try removing the extra positional arguments. _places = new GoogleMapsPlaces(widget.apiKey); ^ file:///C:/Users/admin/AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/google_maps_webservice-0.0.14/lib/src/places.dart:22:3: Context: Found this candidate, but the arguments don't match.
GoogleMapsPlaces({ ^ Compiler failed on C:\Users\admin\AndroidStudioProjects\advertise_me\lib\main.dart

FAILURE: Build failed with an exception.

• Where: Script 'C:\Users\admin\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 647

• What went wrong: Execution failed for task ':app:compileflutterBuildDebugandroid-arm64'.

  Process 'command 'C:\Users\admin\flutter\bin\flutter.bat'' finished with non-zero exit value 1

• 尝试:使用--stacktrace选项运行以获取堆栈跟踪。使用--info或--debug选项运行，以获取更多日志输出。与--scan一起运行以获取完整的见解。
• 在https://help.gradle.org上获得更多帮助


9秒内失败，并完成错误:Gradle任务assembleDebug
失败，退出代码为1

我的pubspes.yaml:



dependencies: flutter: sdk: flutter

cupertino_icons: ^0.1.2 url_launcher: ^4.2.0+1
google_maps_flutter: bottom_sheet_stateful: ^0.1.1
flutter_google_places_autocomplete: 0.1.3 geocoder: 0.1.2
google_maps_webservice: 0.0.14



我的代码:


import 'package:flutter/material.dart';
import 'package:advertise_me/login_screen.dart';
import 'dart:async';
import 'package:google_maps_webservice/geocoding.dart';
//import 'package:flutter_google_places/flutter_google_places.dart';
import 'package:flutter_google_places_autocomplete/flutter_google_places_autocomplete.dart';
import 'package:geocoder/geocoder.dart';


void main() => runApp(MyApp());

const kGoogleApiKey = "My key";


GoogleMapsPlaces _places = GoogleMapsPlaces(apiKey: kGoogleApiKey);

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: demo(),
      ),
    );
  }
}

class demo extends StatefulWidget {
  @override
  demoState createState() => new demoState();
}

class demoState extends State<demo> {
  @override
  Widget build(BuildContext context) {

    return Scaffold(
        body: Container(
            alignment: Alignment.center,
            child: RaisedButton(
              onPressed: () async {
                Prediction p = await showGooglePlacesAutocomplete(
                    context: context, apiKey: kGoogleApiKey);
                displayPrediction(p);
              },
              child: Text('Find address'),

            )
        )
    );
  }

  Future<Null> displayPrediction(Prediction p) async {
    if (p != null) {
      PlacesDetailsResponse detail =
      await _places.getDetailsByPlaceId(p.placeId);

      var placeId = p.placeId;
      double lat = detail.result.geometry.location.lat;
      double lng = detail.result.geometry.location.lng;

      var address = await Geocoder.local.findAddressesFromQuery(p.description);

      print(lat);
      print(lng);
    }
  }
}


我该如何解决此错误？
任何帮助深表感谢。

Answer 1

flutter_google_places_autocomplete已过时，您应该改用flutter_google_places。查看文档:https://pub.dev/packages/flutter_google_places_autocomplete

一旦使用flutter_google_places，请使用
Prediction p = await PlacesAutoComplete.show()代替showGooglePlacesAutoComplete()
=======更新的答案=====

import 'package:flutter/material.dart';
//import 'package:advertise_me/login_screen.dart';
import 'dart:async';
import 'package:flutter_google_places/flutter_google_places.dart';
import 'package:geocoder/geocoder.dart';
import 'package:google_maps_webservice/places.dart';


void main() => runApp(MyApp());

const kGoogleApiKey = "My key";


GoogleMapsPlaces _places = GoogleMapsPlaces(apiKey: kGoogleApiKey);

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: demo(),
      ),
    );
  }
}

class demo extends StatefulWidget {
  @override
  demoState createState() => new demoState();
}

class demoState extends State<demo> {
  @override
  Widget build(BuildContext context) {

    return Scaffold(
        body: Container(
            alignment: Alignment.center,
            child: RaisedButton(
              onPressed: () async {
                Prediction p = await PlacesAutocomplete.show(
                    context: context, apiKey: kGoogleApiKey);
                displayPrediction(p);
              },
              child: Text('Find address'),

            )
        )
    );
  }

  Future<Null> displayPrediction(Prediction p) async {
    if (p != null) {
      PlacesDetailsResponse detail =
      await _places.getDetailsByPlaceId(p.placeId);

      var placeId = p.placeId;
      double lat = detail.result.geometry.location.lat;
      double lng = detail.result.geometry.location.lng;

      var address = await Geocoder.local.findAddressesFromQuery(p.description);

      print(lat);
      print(lng);
    }
  }
}